install/55662: sysinst core dump when installing on Dell R610

[20.100%defert.com@localhost]

>Number:         55662
>Category:       install
>Synopsis:       sysinst core dump when installing on Dell R610
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Sep 15 16:55:00 +0000 2020
>Originator:     Vincent DEFERT
>Release:        9.0_STABLE 2020-09-13
>Organization:
>Environment:
NetBSD  9.0_STABLE NetBSD 9.0_STABLE (GENERIC) #01: Sun Sep 13 15:52:02 UTC 2020  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64
>Description:
--- Output from sysctl machdep.bootmethod:

machdep.bootmethod = UEFI

--- Excerpt from dmesg output:

[     4.031526] sd0 at scsibus0 target 0 lun 0: <DELL, PERC 6/i, 1.22> disk fixed
[     4.031526] sd0: fabricating a geometry
[     4.031526] sd0: 558 GB, 571776 cyl, 64 head, 32 sec, 512 bytes/sect x 1170997248 sectors
[     4.031526] sd0: fabricating a geometry
[     4.031526] sd0: GPT GUID: 66f55470-a671-8d48-85b9-1e8a0ad97a1a
[     4.031526] sd0: tagged queueing

--- Output from gpt show /dev/sd0:

       start        size  index  contents
           0           1         PMBR
           1           1         Pri GPT header
           2          32         Pri GPT table
          34  1170997181         Unused
  1170997215          32         Sec GPT table
  1170997247           1         Sec GPT header

--- Output from fdisk /dev/sd0:

Disk: /dev/sd0
NetBSD disklabel disk geometry:
cylinders: 571776, heads: 64, sectors/track: 32 (2048 sectors/cylinder)
total sectors: 1170997248, bytes/sector: 512

BIOS disk geometry:
cylinders: 1023, heads: 255, sectors/track: 63 (16065 sectors/cylinder)
total sectors: 1170997248

Partitions aligned to 2048 sector boundaries, offset 1

Partition table:
0: GPT Protective MBR (sysid 238)
    start 1, size 1170997247 (571776 MB, Cyls 0-72891/52/57)
        PBR is not bootable: Bad magic number (0x0000)
1: <UNUSED>
2: <UNUSED>
3: <UNUSED>
No active partition.
Drive serial number: 0 (0x00000000)

--- Output from disklabel /dev/sd0:

# /dev/sd0:
type: SCSI
disk: PERC 6/i        
label: fictitious
flags:
bytes/sector: 512
sectors/track: 32
tracks/cylinder: 64
sectors/cylinder: 2048
cylinders: 571776
total sectors: 1170997248
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0		# microseconds
track-to-track seek: 0	# microseconds
drivedata: 0 

4 partitions:
#        size    offset     fstype [fsize bsize cpg/sgs]
 a: 1170997248         0     4.2BSD      0     0     0  # (Cyl.      0 - 571775)
 d: 1170997248         0     unused      0     0        # (Cyl.      0 - 571775)

--- Installation steps in sysinst:

Select: Swiss French keyboard
Select: Install NetBSD to hard disk
Select: Yes
Select: sd0
Select: Add a user partition
Enter mount point: /data0
Select: the new partition (choice g:)
Enter size for /data0 in MB: 472972
Select: Go on
    The list of partitions displayed is:
    a:     1    128    128 MSDOS N 
    b:   130  66055  65926 FFSv2 N /
    c: 66057  98805  32749  swap
    d: 98807 571774 472972 FFSv2 N /data0
Select: Partition sizes ok
Select: Yes

--- What happens:

A newfs progresses, then execution stops with this error message:

assertion "p->gp_flags & GPF_WEDGE" failed: file "/usr/src/usr.sbin/sysinst/arch
/amd64/../../gpt.c", line 1391, function "gpt_get_part_device"
[1]  Abort trap (core dumped) ${cmd}

>How-To-Repeat:
Test on Dell R610 (fails every time)
>Fix: